United Therapeutics’ (UTHR) Tyvaso DPI NDA Gets CRL From FDA (Revised) Posted byZacks Equity Research October 20, 2021 Leave a comment on United Therapeutics’ (UTHR) Tyvaso DPI NDA Gets CRL From FDA (Revised) United Therapeutics’ (UTHR) new drug application for Tyvaso DPI to treat PAH & PH-ILD fails to secure approval from the FDA. The stock declines resultantly.